{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "670307808",
    "entityType": "User",
    "nonce": "0xf806b2ed59f6c7460eafb1f4ce329860b42ae35d757dff7ba8406aeb3dfdf00f",
    "signature": "0xa994220e327d21a8a9654ad3bd57767f6baba18f53e73c8687dd06ec971b587707f17e571622f00ed36a41a2a731c37d6e3ae50be76be4cae35a548b0965b6d51b",
    "signer": "0xd367754F1CE503c2D28B6793582BC23fD71eE997",
    "userId": "420647095"
  }
}